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  2. Cutting tool material - Wikipedia

    en.wikipedia.org/wiki/Cutting_tool_material

    Cutting tool materials are materials that are used to make cutting tools which are used in machining (drill bits, tool bits, milling cutters, etc.) but not other cutting tools like knives or punches. Cutting tool materials must be harder than the material of the workpiece, even at high temperatures during the process.

  3. Drill bit - Wikipedia

    en.wikipedia.org/wiki/Drill_bit

    From top: Spade, brad point, masonry, and twist drills bits Drill bit (upper left), mounted on a pistol-grip electric drill A set of masonry drills. A drill bit is a cutting tool used in a drill to remove material to create holes, almost always of circular cross-section. Drill bits come in many sizes and shapes and can create different kinds of ...

  4. List of drill and tap sizes - Wikipedia

    en.wikipedia.org/wiki/List_of_drill_and_tap_sizes

    Below is a comprehensive drill and tap size chart for all drills and taps: Inch, imperial, and metric, up to 36.5 millimetres (1.44 in) in diameter. In manufactured parts, holes with female screw threads are often needed; they accept male screws to facilitate the building and fastening of a finished assembly.

  5. Hughes Tool Company - Wikipedia

    en.wikipedia.org/wiki/Hughes_Tool_Company

    This included the drill bit (well) and tool joint product lines critical for oil and gas drilling, some of the first technologies for ram blast bits for drilling in mines, geothermal drilling, and a hydraulic powered jackhammer known as the Hughes Impactor. [7]

  6. Drill - Wikipedia

    en.wikipedia.org/wiki/Drill

    Counterbore Drill Bits – a drill bit used to enlarge existing holes; Countersink Drill Bits – a drill bit to create a wide opening for a screw; High-Speed Drill Bits – these are drill bits made to be very strong and therefore are often used to cut metals; Spade drill Bits – spade-shaped drill bits used primarily to bore holes in softwoods

  7. Tool bit - Wikipedia

    en.wikipedia.org/wiki/Tool_bit

    Originally, all tool bits were made of high carbon tool steels with the appropriate hardening and tempering.Since the introductions of high-speed steel (HSS) (early years of the 20th century), sintered carbide (1930s), ceramic and diamond cutters, those materials have gradually replaced the earlier kinds of tool steel in almost all cutting applications.

  8. North Brothers Manufacturing Company - Wikipedia

    en.wikipedia.org/wiki/North_Brothers...

    Building upon the line of tools originally made by Forest City, North Bros. soon expanded their selection of offerings. Screwdrivers were joined by push drills , breast drills , hand drills (also called egg beater drills), hand powered bench drills, bit and braces , ratcheting tap wrenches , vises , cutting tools and small tool kits.

  9. Roller cone bit - Wikipedia

    en.wikipedia.org/wiki/Roller_cone_bit

    A roller-cone bit is a drill bit used for drilling through rock that features 2 or 3 abrasive, spinning cones that break up rock and sediment as they grind against it. Roller-cone bits are typically used when drilling for oil and gas. [1] A water jet flowing through the bit washes out the rock in a slurry. [2]

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